Year	Percent
1996-01-01	82.2223
1997-01-01	83.6266
1998-01-01	84.9357
1999-01-01	90.1288
2000-01-01	82.0203
2001-01-01	86.4639
2002-01-01	90.9505
2003-01-01	98.7297
2004-01-01	93.0657
2005-01-01	78.3596
2006-01-01	77.2822
2007-01-01	79.2644
2008-01-01	77.7781
2009-01-01	77.1065
2010-01-01	72.2041
2011-01-01	69.2220
2012-01-01	69.8470
2013-01-01	76.9011
2014-01-01	77.0938
2015-01-01	76.3254
2016-01-01	80.8600